/* ==========================================================================
   LABORATORIO — sección de la portada, entre la bóveda y contacto.
   Todo vive aislado acá y en lab.js: revertir = borrar el <section
   id="laboratorio">, estos dos archivos y sus dos referencias en index.html.
   ========================================================================== */
.lab{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  background:
    radial-gradient(60% 70% at 100% 0%, rgba(18,169,220,.10) 0%, transparent 60%),
    radial-gradient(50% 60% at 0% 100%, rgba(18,169,220,.07) 0%, transparent 60%),
    var(--canvas);
}
/* Cuadrícula tenue de mesa de trabajo. */
.lab::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(18,169,220,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(18,169,220,.07) 1px,transparent 1px);
  background-size:36px 36px;
  -webkit-mask-image:radial-gradient(80% 70% at 50% 40%,#000 30%,transparent 85%);
          mask-image:radial-gradient(80% 70% at 50% 40%,#000 30%,transparent 85%);
}

/* ---------- Encabezado ---------- */
.lab-head{
  display:grid;grid-template-columns:1fr 1fr;gap:18px 48px;align-items:end;
  margin-bottom:34px;
}
.lab .lab-eyebrow{text-align:left}
.lab-title{
  font-family:Anton,"Arial Narrow",Impact,sans-serif;
  font-weight:400;
  font-size:clamp(32px,4.4vw,54px);
  line-height:1;
  letter-spacing:.006em;
  text-transform:uppercase;
}
.lab-title span{color:var(--sky-500)}
.lab-lead{margin:0;font-size:15.5px;line-height:1.7;color:var(--body)}

/* ---------- Mosaico de fotos ---------- */
.lab-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:clamp(150px,15vw,200px);
  grid-template-areas:
    "a a b c"
    "a a b d"
    "e f f g";
  gap:14px;
}
.lab-a{grid-area:a}.lab-b{grid-area:b}.lab-c{grid-area:c}.lab-d{grid-area:d}
.lab-e{grid-area:e}.lab-f{grid-area:f}.lab-g{grid-area:g}

.lab-tile{
  position:relative;display:block;overflow:hidden;
  padding:0;border:0;margin:0;cursor:zoom-in;
  border-radius:var(--r-lg);
  background:var(--sky-900);
  box-shadow:var(--sh-md);
  font:inherit;text-align:left;color:#fff;
  transition:box-shadow var(--t),transform var(--t);
}
.lab-tile img{
  position:absolute;inset:0;width:100%;height:100%;
  object-fit:cover;
  transition:transform .8s cubic-bezier(.2,.7,.3,1),filter .5s ease;
}
.lab-b img,.lab-d img,.lab-e img{object-position:50% 40%}
/* Degradado para que el texto se lea sobre cualquier foto. */
.lab-tile::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 45%,rgba(5,20,32,.78) 100%);
  transition:opacity var(--t);
}
.lab-num{
  position:absolute;top:12px;left:14px;z-index:2;
  font-family:Anton,"Arial Narrow",Impact,sans-serif;font-size:15px;letter-spacing:.08em;
  padding:3px 9px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.3);
}
.lab-cap{
  position:absolute;left:16px;right:16px;bottom:14px;z-index:2;
  display:flex;flex-direction:column;gap:3px;
}
.lab-cap strong{font-size:15px;font-weight:600;line-height:1.25}
.lab-cap em{
  font-style:normal;font-size:13px;line-height:1.45;color:rgba(255,255,255,.86);
  max-height:0;opacity:0;overflow:hidden;
  transition:max-height .45s ease,opacity .35s ease;
}
.lab-a .lab-cap strong{font-size:19px}

@media (hover:hover){
  .lab-tile:hover{box-shadow:0 0 0 2px var(--sky-400),0 22px 50px rgba(18,169,220,.28);transform:translateY(-3px)}
  .lab-tile:hover img{transform:scale(1.06)}
  .lab-tile:hover .lab-cap em{max-height:70px;opacity:1}
}
.lab-tile:focus-visible{outline:3px solid var(--sky-500);outline-offset:3px}
.lab-tile:focus-visible .lab-cap em{max-height:70px;opacity:1}
/* La foto grande siempre muestra su texto. */
.lab-a .lab-cap em{max-height:70px;opacity:1}

/* ---------- Lo que se hace en el laboratorio ---------- */
.lab-skills{
  list-style:none;margin:26px 0 0;padding:0;
  display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
}
.lab-skills li{
  display:flex;gap:12px;align-items:flex-start;
  padding:16px 16px;border-radius:var(--r-md);
  background:var(--white);border:1px solid var(--line);box-shadow:var(--sh-sm);
}
.lab-skills svg{
  flex:none;width:40px;height:40px;padding:10px;border-radius:12px;
  color:var(--sky-600);background:var(--sky-50);
}
.lab-skills span{font-size:13px;line-height:1.45;color:var(--body)}
.lab-skills b{display:block;font-size:14.5px;font-weight:600;color:var(--ink);margin-bottom:2px}

.lab-cta{display:flex;justify-content:center;margin-top:30px}

/* ---------- Visor a pantalla completa ---------- */
.lab-box{
  position:fixed;inset:0;z-index:1200;
  display:flex;align-items:center;justify-content:center;
  padding:clamp(12px,3vw,40px);
  background:rgba(4,14,22,.93);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  animation:labIn .25s ease;
}
/* Sin esto el display:flex le gana al atributo hidden y el visor tapa la página. */
.lab-box[hidden]{display:none}
@keyframes labIn{from{opacity:0}to{opacity:1}}
.lab-fig{margin:0;display:flex;flex-direction:column;align-items:center;gap:14px;max-width:min(1200px,100%)}
.lab-fig img{
  display:block;max-width:100%;max-height:calc(100vh - 150px);
  width:auto;height:auto;border-radius:14px;box-shadow:0 30px 80px rgba(0,0,0,.5);
  touch-action:pan-y;user-select:none;-webkit-user-drag:none;
}
.lab-fig figcaption{display:flex;flex-direction:column;align-items:center;gap:3px;text-align:center;color:#fff}
.lab-fig figcaption span{font-family:Anton,"Arial Narrow",Impact,sans-serif;font-size:13px;letter-spacing:.1em;color:var(--sky-400)}
.lab-fig figcaption strong{font-size:17px;font-weight:600}
.lab-fig figcaption em{font-style:normal;font-size:14px;color:rgba(255,255,255,.78)}
.lab-x,.lab-arrow{
  position:absolute;z-index:2;display:grid;place-items:center;
  width:48px;height:48px;border-radius:50%;cursor:pointer;
  color:#fff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);
  transition:background var(--t),transform var(--t);
}
.lab-x{top:16px;right:16px;font-size:30px;line-height:1}
.lab-arrow{top:50%;transform:translateY(-50%)}
.lab-arrow svg{width:20px;height:20px}
.lab-prev{left:16px}.lab-next{right:16px}
.lab-x:hover,.lab-arrow:hover{background:var(--sky-500)}
body.lab-open{overflow:hidden}

/* ---------- Responsive ---------- */
@media (max-width:980px){
  .lab-head{grid-template-columns:1fr;align-items:start}
  .lab-grid{
    grid-template-columns:repeat(2,1fr);
    grid-auto-rows:clamp(150px,30vw,230px);
    grid-template-areas:
      "a a"
      "b c"
      "b d"
      "e f"
      "g g";
  }
  .lab-f img{object-position:40% 50%}
  .lab-skills{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:560px){
  .lab-grid{gap:10px;grid-auto-rows:clamp(130px,38vw,190px)}
  .lab-tile{border-radius:var(--r-md)}
  .lab-cap{left:12px;right:12px;bottom:10px}
  .lab-cap strong{font-size:13.5px}
  .lab-a .lab-cap strong{font-size:16px}
  .lab-a .lab-cap em{font-size:12.5px}
  .lab-num{font-size:13px;top:9px;left:10px}
  .lab-skills{grid-template-columns:1fr;gap:10px}
  .lab-cta .btn{width:100%;justify-content:center}
  .lab-arrow{top:auto;bottom:18px;transform:none;width:44px;height:44px}
  .lab-prev{left:calc(50% - 56px)}.lab-next{right:calc(50% - 56px)}
  .lab-fig img{max-height:calc(100vh - 210px)}
  .lab-fig{margin-bottom:60px}
}
@media (prefers-reduced-motion:reduce){
  .lab-tile,.lab-tile img,.lab-cap em{transition:none}
  .lab-box{animation:none}
}